Concatenation of first n imperfect numbers.
A132943
Concatenation of first n imperfect numbers.
Terms
- a(0) =1a(1) =12a(2) =123a(3) =1234a(4) =12345a(5) =123457a(6) =1234578a(7) =12345789a(8) =1234578910a(9) =123457891011
External references
- oeis: A132943